Posture Sensing Device: MAE 156B Week 1
Team Members: Wesley Chipeco, Martin Vega, Kevin Sperzel, Jesus Martinez
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
We have purchased all of the major components of our device such as sensors, Bluetooth modules, microprocessors, etc. We are now focusing on the initial stages of the PCB design and code that we will flash onto it. We are also sticking with using multiple sensors placed on the users’ back as a way of getting as accurate a reading as possible (tilt angle of spine with high reliability/sufficient sensitivity). We are also meeting with our sponsors Dr. Hofflich and NP Stimson this upcoming Wednesday to discus the medical aspect of what the ideal posture angle is.
Accomplishments from Previous Week
We purchased all the major components of our device.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Kevin: Preliminary PCB design
Martin: Preliminary PCB design Wesley: Data transferring to phone using IBM’s IoT Jesus: Data transferring to phone using IBM’s IoT
Same as previous meeting
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (Person, March, 7th 2016)
Our sponsors decided to design a product reminiscent of the Lumo Lift, which is the most popular posture-detecting sensor on the market today. As a result we have purchased the Lumo Lift and will open it to analyze their circuitry.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (Person, February 25th 2016 )
Professor Jayson recommended looking into TI’s SensorTag. As a result we have purchased it and are comparing its data output with Lumo Lift. We will also analyze its circuitry so that we can then build our own custom board while implementing their Bluetooth ability. Professor Hoople also brought up the idea of having a vibrating feedback. As a result we are now looking into vibrating motors to implement into our own circuit board much like the Lumo Lift has.
Risks and Areas of Concern
How we will combine the data from multiple sensors to produce a single output.
Describe upcoming milestone
Designing PCB board.
Budget
2 TI SensorTag’s: $72
Lumo Lift: $79.99
3 Cortex-M7 Processor: $48.51
2 TI SensoTag DevPack’s: $30
3 Simblee’s (BlueTooth Low Energy Modules): $60 3 InvenSense Motion Sensor’s: $15
3 Battery Holder’s: $1.3
Total: $306.81
Update on Website
We have a website layout and will begin to update it regularly starting this week.